How to convert mmol/l to mg/dl . how to convert mmol/l to mg/dl? is there any converter for easier understanding of diabetesblood sugar readings?. iv. 1 mmol phosphorus = 31 mg phosphorus. recommendations by life stage give a contribution of 75 mg phosphorus/day from breast milk that is added to 200 mg/day. Sodium phosphate – injection, solution, concentrate phosphate 3 mmol and sodium 4 meq/ml. pharmacology. exerts a modifying influence on the steady state of calcium.